The CC3200 board (Wipy1) is discontinued. The ESP32 has principally 16 channels, but most board break out only a subset of them. Besides that, the ESP32 ADC is bad, like the ESP8266 (nodemcu) one. You can alsways usd external ADCs, like based on an ADS1115 or others, which are connecetd to the MCU board by I2C or SPI. The quality of these ADCs is typicall way better than the built-in ADC.
PyBoard also has 16 ADC channels, and the ADC is fine, but no built-in WiFi.